Narrow band imaging and white light endoscopy in the characterization of a polypectomy scar: A single-blind observational study

Montserrat Andreu, Javier Gimeno Beltran, Marco Antonio Álvarez-Gonzalez, Agustín Seoane Urgorri, Josep Maria Dedeu, Luis Barranco Priego, Xavier Bessa, Fausto Riu Pons

    Research output: Contribution to journalArticleResearch

    2 Citations (Scopus)

    Abstract

    © The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved. AIM To assess the incremental benefit of narrow band imaging (NBI) and white light endoscopy (WLE), randomizing the initial technique for the detection of residual neoplasia at the polypectomy scar after an endoscopic piecemeal mucosal resection (EPMR). METHODS We conducted an observational study in an academic center to assess the incremental benefit of NBI and WLE randomly applied 1:1 (NBI-WLE or WLE-NBI) in the follow-up of a post-EPMR scar by the same endoscopist. RESULTS A total of 112 EPMR scars were included. The median baseline polyp size was 20 mm (interquartile range: 14-30). At first review, NBI and WLE showed good sensitivity (85.0% vs 78.9%), specificity (77.1% vs 84.2%) and overall accuracy (80.0% vs 82.5%). NBI after WLE (WLE-NBI group) improved accuracy, but this difference was not statistically significant [area under the curve (AUC): 86.8% vs 81.6%, P = 0.15]. WLE after NBI (NBI-WLE group) did not improve accuracy (AUC: 81.4% vs 81.1%, P = 0.9). Overall, recurrence was found in 39/112 (34.8%) lesions. CONCLUSION Although no statistically significant differences were found between the two techniques at the first post-EPMR assessment, the use of NBI after WLE may improve residual neoplasia detection. Nevertheless, biopsy is still required in the first scar review.
    Original languageEnglish
    Pages (from-to)5179-5188
    JournalWorld Journal of Gastroenterology
    Volume24
    DOIs
    Publication statusPublished - 7 Dec 2018

    Keywords

    • Colonoscopy
    • Endoscopic mucosal resection
    • Narrow band imaging

    Fingerprint Dive into the research topics of 'Narrow band imaging and white light endoscopy in the characterization of a polypectomy scar: A single-blind observational study'. Together they form a unique fingerprint.

    Cite this